Question

我想创建一个没有任何库的可滚动卡片视图。

每个LinearLayout都应该是一张卡片。我可以通过编程方式创建一个LinearLayout并使用xml LinearLayout中的id初始化它吗？

这里就像这样（但它不起作用）：

public class LinearLayoutAdapter extends BaseAdapter {

private List<ImageContent> images;

private Context context;

private Activity activity;

private int width, height;

public LinearLayoutAdapter(Activity activity, Context context, List<ImageContent> img,

int width, int height) {

this.context = context;

this.activity=activity;

this.images = img;

this.width = width;

this.height = height;

}

@Override

public int getCount() {

// TODO Auto-generated method stub

return images.size();

}

@Override

public Object getItem(int position) {

// TODO Auto-generated method stub

return images.get(position);

}

@Override

public long getItemId(int position) {

// TODO Auto-generated method stub

return 0;

}

@Override

public View getView(int position, View convertView, ViewGroup parent) {

LinearLayout lLayout;


if (convertView != null) {

lLayout = (LinearLayout) convertView;

//lLayout = (LinearLayout) convertView.findViewById(R.id.imageLinearLayout); // this does not work

} else {

lLayout = new LinearLayout(context);


}

return lLayout;

}

}

Answer 1

如果您想从XML获取linearlayout，则需要对布局进行扩充。

if (convertView == null) {
    convertView = LayoutInflater.from(context).inflate(
                      R.layout.your_layout, parent, false);
}

lLayout = (LinearLayout) convertView.findViewById(R.id.imageLinearLayout);

查看此网站，以便更好地重复使用ViewHolder进行布局。 http://www.piwai.info/android-adapter-good-practices/

Android - 以编程方式创建LinearLayout并从xml LinearLayout初始化id

1 个答案: